1. All-steel welding structure with full strength and rigidly, hydraulic upper transport.
2. Fuction of quick up and pressurization as well as quick return and pressure relief.
3. RAM synchronization adopts device of withtorque-rod and gagget block.
4. Motor-diven adjuestment to stoke and back-gauge position, manul fine adjuestment with counter display.
5. Upper die adopts the deflection compensation device.
6. Large-scal working table adopts hydraulic deflection compensation device.